Question

(2-4/9)+(5/7+1)×(4,2/3-2,5/8):1,3/4​

Answer 1

Ответ:

Пошаговое объяснение:

14/9+12/7*(1,4-0,3125)/13/10*1/4

14/9+12/7*87/80*10/13*1/4

14/9+3/7*87/80*10/13

14/9+3/7*87/8*1/13

14/9+261/728

12541/6552

Answer 2

To simplify the expression, let's break it down step by step:

Step 1: Simplify the expression inside the parentheses.

(5/7 + 1) = (5/7 + 7/7) = (5/7 + 7/7) = 12/7

Step 2: Simplify the expression inside the second set of parentheses.

(4.2/3 - 2.5/8) = (5.6/3 - 2.5/8) = (37.6/24 - 7.5/24) = 30.1/24

Step 3: Perform the multiplication.

(12/7) × (30.1/24) = (12 × 30.1) / (7 × 24) = 361.2 / 168

Step 4: Simplify the expression with fractions and decimals.

(2 - 4/9) = (18/9 - 4/9) = 14/9

Step 5: Perform the division.

(361.2 / 168) ÷ (1.3/4) = (361.2 / 168) × (4/1.3)

To simplify further, let's convert 1.3 to a fraction:

1.3 = 1 + 0.3 = 1 + 3/10 = 10/10 + 3/10 = 13/10

(361.2 / 168) × (4/13/10) = (361.2 / 168) × (4/13) × (10/1)

Now, let's perform the multiplication:

(361.2 / 168) × (4/13) × (10/1) = (361.2 × 4 × 10) / (168 × 13)

Finally, let's simplify the expression:

(361.2 × 4 × 10) / (168 × 13) ≈ 871.2 / 2184 ≈ 0.3989

Therefore, the final result of the expression is approximately 0.3989.